BQ1B020 - 20Amp Circuit Breaker

BQ1B020 - 20Amp Circuit Breaker

The Siemens BQ1B020 is a 20 amp, 1-pole bolt-on circuit breaker used in compatible Siemens panelboards and electrical distribution equipment. It is designed to provide branch circuit protection for 120VAC applications, helping protect your circuits from overloads and short circuits in commercial, industrial, and institutional electrical systems.

As part of the Siemens BQ series, this molded case circuit breaker is commonly found in commercial buildings, schools, healthcare facilities, retail spaces, and other properties that utilize Siemens electrical distribution systems. With a 10kAIC interrupting rating, the BQ1B020 is suitable for a wide range of branch circuit applications, including lighting, receptacle, and control circuits.

When you're replacing an existing breaker, matching the original amp rating, mounting style, and series is often necessary to maintain compatibility with the installed equipment. The BQ1B020 provides the required form, fit, and function for compatible Siemens panelboards and distribution equipment.

Key Features and Benefits

• 20 Amp Current Rating – Provides branch circuit protection for 20-amp electrical systems.
• 1-Pole Design – Intended for single-phase, 120-volt circuit applications.
• 120VAC Rated – Suitable for use in compatible low-voltage electrical distribution systems.
• 10kAIC Interrupting Capacity – Rated to safely interrupt fault currents up to 10,000 amps.
• Bolt-On Mounting Configuration – Secures directly to compatible Siemens panelboards.
• Load-Side Lugs Included – Helps streamline installation and replacement projects.
• Molded Case Construction – Provides overcurrent and short-circuit protection for branch circuits and connected equipment.
• Compact Footprint – Fits compatible Siemens panelboards and electrical distribution equipment.
• Built to Last – Designed for long-term use when properly installed and maintained.
• Form, Fit, and Function Replacement – Suitable when matching existing Siemens BQ-series breaker specifications.
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: BQ1B020
  
• Manufacturer Part Number (MFN): BQ1B020
  
• Product Family: Branch Circuit Breakers
  
• Circuit Breaker Type: BQ Molded Case Circuit Breaker
  
• Number of Poles: 1
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 120VAC
  
• Interrupting Rating (AIR): 10kAIC
  
• Mounting Type: Bolt-On
  
• Electrical Connection Type: Bolt-On
  
• Application: Electrical Distribution
  
• Load-Side Lugs: Included
  
• Standard: UL 489
  
• Product Status: Active
  
• UPC: 783643102323
  
• Width: 1.00 in.
  
• Height: 3.736 in.
  
• Length: 2.571 in.
  
• Net Weight: 0.309 lb.
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• The Siemens BQ1B020 is manufactured in accordance with UL 489 standards for molded case circuit breakers and recognized electrical safety standards for branch circuit protection devices. It is intended for installation in compatible electrical distribution equipment and should be installed in accordance with manufacturer specifications, applicable electrical codes, and local regulations. Compliance requirements should always be verified before installation.
  

Where It Works Best

• The Siemens BQ1B020 is commonly used in commercial buildings, schools, healthcare facilities, retail spaces, office complexes, warehouses, and industrial environments that utilize Siemens electrical distribution equipment. Typical applications include lighting, receptacle, control, and other general-purpose branch circuits. It is commonly used when existing equipment specifications call for a Siemens BQ series 20 amp, 1-pole, 120VAC bolt-on circuit breaker with a 10kAIC interrupting rating.